<template>
  <view class="goods-detail-container">


    <view v-if="goods_info.goods_name ">
      <!-- 轮播图区 -->
      <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
        <swiper-item v-for="(item,i) in goods_info.pics" :key="i" @click="preview(i)">
          <image :src="item.pics_big"></image>
        </swiper-item>
      </swiper>

      <!-- 商品信息区 -->
      <view class="goods-info-box">
        <!-- 商品金额 -->
        <view class="goods-price">￥{{goods_info.goods_price}}
        </view>
        <!-- 商品信息主体区 -->
        <view class="goods-info-body">
          <view class="goods-name">
            {{goods_info.goods_name}}
          </view>
          <view class="favi">
            <uni-icons type="star" size="18"></uni-icons>
            <text>收藏</text>
          </view>
        </view>
        <view class="yf">
          快递：免运费
        </view>
      </view>

      <rich-text :nodes="goods_info.goods_introduce"></rich-text>
      <view class="goods-nav">
        <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick"
          @buttonClick="buttonClick" />
      </view>

    </view>
  </view>
</template>

<script>
  import {
    mapState,
    mapMutations,
    mapGetters
  } from 'vuex'
  export default {
    computed: {
      // 调用 mapState 方法，把 m_cart 模块中的 cart 数组映射到当前页面中，作为计算属性来使用
      // ...mapState('模块的名称', ['要映射的数据名称1', '要映射的数据名称2'])

      ...mapState('m_cart', ['cart']),
      ...mapGetters('m_cart', ['total'])
    },
    watch: {
      // total(newVal){
      // const findResult=  this.options.find((x) => x.text === '购物车')
      // if(findResult){
      //   findResult.info=newVal
      // }
      // }
      total: {
        handler(newVal) {
          const findResult = this.options.find((x) => x.text === '购物车')
          if (findResult) {
            findResult.info = newVal
          }
        },
        immediate: true
      }
    },
    onLoad(options) {
      const goods_id = options.goods_id
      console.log(goods_id)
      this.getGoodsDetail(goods_id)
    },
    data() {
      return {
        goods_info: {},
        options: [{
          icon: 'shop',
          text: '店铺',
          infoBackgroundColor: '#007aff',
          infoColor: "red"
        }, {
          icon: 'cart',
          text: '购物车',
          info: 0
        }],
        buttonGroup: [{
            text: '加入购物车',
            backgroundColor: '#ff0000',
            color: '#fff'
          },
          {
            text: '立即购买',
            backgroundColor: '#ffa200',
            color: '#fff'
          }
        ]
      };
    },
    methods: {
      // 把 m_cart 模块中的 addToCart 方法映射到当前页面使用
      ...mapMutations('m_cart', ['addCart']),
      onClick(e) {
        if (e.content.text === '购物车') {
          uni.switchTab({
            url: "/pages/cart/cart"
          })
        }
        //console.log(e)
      },
      buttonClick(e) {
        if (e.content.text === '加入购物车') {
          const goods = {
            goods_id: this.goods_info.goods_id, // 商品的Id
            goods_name: this.goods_info.goods_name, // 商品的名称
            goods_price: this.goods_info.goods_price, // 商品的价格
            goods_count: 1, // 商品的数量
            goods_small_logo: this.goods_info.goods_small_logo, // 商品的图片
            goods_state: true
          }
          this.addCart(goods)
        }
      },

      async getGoodsDetail(goods_id) {
        const {
          data: res
        } = await uni.$http.get('/api/public/v1/goods/detail', {
          goods_id
        })
        if (res.meta.status !== 200) {
          return uni.$showMsg("数据加载失败")
        }
        res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style:"display:block;"')
          .replace(/webp/g, 'jpg')
        this.goods_info = res.message
      },
      // 实现轮播图的预览效果
      preview(i) {
        // 调用 uni.previewImage() 方法预览图片
        uni.previewImage({
          current: i,
          // 所有图片 url 地址的数组
          urls: this.goods_info.pics.map(x => x.pics_big)
        })
      }
    }
  }
</script>

<style lang="scss">
  swiper {
    height: 750rpx;

    image {
      width: 100%;
      height: 100%;
    }
  }

  .goods-info-box {
    padding: 10px;
    padding-right: 0;

    .goods-price {
      font-size: 18px;
      color: #C00000;
      margin-bottom: 10px 0;
    }

    .goods-info-body {
      display: flex;
      justify-content: space-between;

      .goods-name {
        font-size: 16px;
        padding-right: 10px;
      }

      .favi {
        color: grey;
        width: 120px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        border-left: 1px solid #efefef;

        text {
          color: grey;
          font-size: 13;
        }
      }
    }

    .yf {
      margin: 10px 0;
      color: grey;
      font-size: 13;
    }
  }

  .goods-nav {
    width: 100%;
    position: fixed;
    bottom: 0;
    left: 0;
  }

  .goods-detail-container {
    padding-bottom: 50px;
  }
</style>